scholarly journals Microwave Imaging for Breast Cancer Detection

2021 ◽  
Author(s):  
Yoshihiko Kuwahara
Keyword(s):  
Soft Tissues ◽  
Near Field ◽  
Microwave Imaging ◽  
Breast Cancer Detection ◽  
Confocal Imaging ◽  
X Rays ◽  
Imaging Device ◽  
Actual Equipment ◽  
Hardware Configuration ◽  
Imaging Algorithms

Microwave imaging (MI) is characterized by no exposure, stronger contrast between soft tissues than X-rays and ultrasound, and a smaller device scale. This chapter describes the electrical properties of the breast tissue that underlie MI, and then outlines the MI hardware configuration and three imaging algorithms: confocal imaging, scattering tomography, and near-field holography. After that, we will introduce the actual equipment and experimental results using the three imaging algorithms. Finally, we will summarize the challenges of realizing a medical imaging device using MI.

Mono Pulse Confocal Microwave Imaging in Breast Cancer Detection

2013 ◽  
Vol 748 ◽  
pp. 525-530
Author(s):  
Jin Zu Ji ◽  
Jing Li
Keyword(s):  
Breast Cancer ◽  
Cancer Detection ◽  
Fdtd Method ◽  
Microwave Imaging ◽  
Breast Cancer Detection ◽  
Assigned Value ◽  
The Difference ◽  
Imaging Algorithms ◽  
Backscattered Signals ◽  
Confocal Microwave Imaging

Mono pulse algorithm for confocal microwave imaging (CMI) for breast cancer detection is presented in this paper. All the antennas are used as receiver but only one is also used as transmitter. The transmitted signal is emitted for only once, thus the gross electromagnetic wave energy to the breast is reduced and the diagnosis time can be saved. Two confocal microwave imaging algorithms are presented in this paper: delay-sum-max and delay-production-sum. Both algorithms use the same delayed backscattered signals as the convectional CMI. The difference is how to use the delayed signals to form the image of the scattering intensity. Delay-sum-max method adds the signal together to generate the different value in confocal point via coherent and incoherent addition. Delay-production-sum algorithm products the delayed signal so as to make the assigned value in the confocal point outside the tumor is nearly zero. The image results can be compliment for more confirm diagnosis. Finite-difference time-domain (FDTD) method is used for simulation on 3 models of different tumor arrangements. The results show both methods are effective in detecting single-tumor, while there are some limitations in dealing with multi-tumor.

scholarly journals SAFE: A Novel Microwave Imaging System Design for Breast Cancer Screening and Early Detection—Clinical Evaluation

Diagnostics ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 533
Author(s):  
Aleksandar Janjic ◽  
Mehmet Cayoren ◽  
Ibrahim Akduman ◽  
Tuba Yilmaz ◽  
Emre Onemli ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Screening ◽  
Early Detection ◽  
Breast Cancer Screening ◽  
Imaging System ◽  
Microwave Imaging ◽  
Thoracic Wall ◽  
Breast Size ◽  
X Rays ◽  
Imaging Device

SAFE (Scan and Find Early) is a novel microwave imaging device intended for breast cancer screening and early detection. SAFE is based on the use of harmless electromagnetic waves and can provide relevant initial diagnostic information without resorting to X-rays. Because of SAFE’s harmless effect on organic tissue, imaging can be performed repeatedly. In addition, the scanning process itself is not painful since breast compression is not required. Because of the absence of physical compression, SAFE can also detect tumors that are close to the thoracic wall. A total number of 115 patients underwent the SAFE scanning procedure, and the resultant images were compared with available magnetic resonance (MR), ultrasound, and mammography images in order to determine the correct detection rate. A sensitivity of 63% was achieved. Breast size influenced overall sensitivity, as sensitivity was lower in smaller breasts (51%) compared to larger ones (74%). Even though this is only a preliminary study, the results show promising concordance with clinical reports, thus encouraging further SAFE clinical studies.

scholarly journals Microwave Imaging of the Breast

2005 ◽  
Vol 4 (1) ◽  
pp. 69-82 ◽  
Author(s):  
Elise C. Fear
Keyword(s):  
Breast Cancer ◽  
Cancer Detection ◽  
Breast Imaging ◽  
Electromagnetic Property ◽  
Microwave Imaging ◽  
Breast Cancer Detection ◽  
Medical Applications ◽  
Computational Power ◽  
Recent Developments ◽  
Imaging Algorithms

Microwave imaging for medical applications has been of interest for many years. Recently, microwave imaging for breast cancer detection has gained attention due to advances in imaging algorithms, microwave hardware and computational power. The breast is relatively translucent to microwaves, accessible for imaging, and there appears to be a significant electromagnetic property contrast between tumors and healthy tissues. Therefore, breast imaging may be the first clinically viable application of microwave imaging. This paper reviews recent developments in passive, hybrid, and active approaches to microwave breast cancer detection.

scholarly journals Heterodyne Near Field Speckles: from laser light to X-rays

2021 ◽  
Vol 6 (1) ◽  
pp. 1891001
Author(s):  
M. Siano ◽  
B. Paroli ◽  
M. A. C. Potenza
Keyword(s):  
Laser Light ◽  
Near Field ◽  
X Rays
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